Raphael, The system is designed to do the GOTO until the object offset is less than a certain factor... I think it was like 0.03 degrees or so. So it does one GOTO - checks the offset with the AN - does a 2nd goto - if needed and if it is not more than 1.7 degrees out (which says the ratios are WAY OFF) it will do a 3rd attempt. Ideally if the ratios were perfect it would be VERY close on the first GOTO - which is why I suggest doing 100deg to to make the error (percentage being the same) larger ... so watch when it stops that first time - note that offset and arrow direction and use the equations in the doc to figure out the new ratio based on this. It should then be within about 1 % (1 degree) or less with a 100 deg move on the first attempt. The math does not take into account the fact that during this time the Earth is still rotating - the sky apparently moving. So there will be a small error just due to this. The 2nd resolves this.
g.